<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrap">
						<div class="button">{{this.city}}</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrap" 
						 v-for="item of hot"
						 :key="item.id"
						 @click="handleItemClick(item.name)"
					>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>
			<div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
				<div class="title border-topbottom">{{key}}</div>
				<div class="item-list">
					<div 	class="item border-topbottom" 
							v-for="innerItem in item"
							:key="innerItem.id"
							@click="handleItemClick(innerItem.name)"
					>
						{{innerItem.name}}
					</div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState } from 'vuex'
export default{
	name:'CityList',
	mounted(){
		this.scroll = new Bscroll(this.$refs.wrapper)
	},
	props: {
		hot:Array,
		cities:Object,
		letter:String
	},
	computed:{
		...mapState(['city'])
	},
	methods:{
		handleItemClick:function(city){
			this.$store.commit('changeCity',city)
			this.$router.push('/')
		}
	},
	watch:{
		letter(){
			const element = this.$refs[this.letter][0]
			if(this.letter){
				this.scroll.scrollToElement(element)
			}
		}
	}
}
</script>

<style lang="stylus" scoped>
	.border-topbottom
		&:before
			border-color: #ccc
		&:after
			border-color: #ccc
	.list
		overflow:hidden
		position: absolute
		top: 1.58rem
		left: 0
		right: 0
		bottom: 0

		.title
			line-height: .4rem
			background: #eee
			padding-left :.2rem
			color: #666
		.button-list
			overflow:hidden
			padding: .1rem .6rem .1rem .1rem

			.button-wrap
				float: left
				width: 33.33%
				padding: .1rem 0
				.button
					marin: .1rem
					padding: .1rem 0
					text-align: center
					border: .02rem solid #ccc
					border-radius: .06rem
		.item-list
			.item
				line-height: .6rem
				height: .6rem
				color: black
				padding-left: .2rem
</style>
